Selective signaling system.



H. O. HUGH.

SELEGTIVE SIGNALING SYSTEM.

I APPLICATION FILED 1330.9, 1907.

g gww Patented Sept.29,1908.

Rwazzfi: War/y M W/.

tINITED stra'rias PATENT car es.

' HARRY.O. RUGH, OF SANDWICH, ILLINOIS.

SELECTIVE SIGNALING- SYSTEM.

toms, of which the following is a full, clear,

acters another partyor parties. My IIIVGIIUOII finds an important comconcise, and exact description, reference be ing-had to theaccompanymg drawings, forming apart of'this s ecification.

I My inventionre ates to selective circuit or signaling systems, and has for its'object the provision of an improved signaling or circult selective apparatusand an improved. circuit arrangement for selective signaling purposes. I willexplain my invention fully by refer ence to the accompanying drawing, showing the preferred embodiment thereof, in which Figure 1 is a diagram indicating generally a circuit arrangement entering into the sys tein of my invention. Fig. 2 indicates selective signaling apparatus in diagrammatic form and located at one of several signaling stations upon a signaling circuit.

arts are indicated by similar char- Freferencc in both figures.

My inventionis primarily designed'for use in association with telegrapheirouits where telephone outfits are also located, the invention enabling a master operator 'or despat-ch'er to operate the signal ofa selected station, so that the operator or the one who is to respond at the signaled station may understand that h'e is to put himself into communication wit-h mercial use in connection with those telegraphic systems that also employ telephones,

so that duringthe busier hours of the day the telegraphic outfits at, the various stations may be manned by competent telegraphers,

whereas during-the quieter hours the telegraph operators may be relieved of duty, to be replaced by those who are to use the tele' phones and who, conse uently, need not be skilled in telegraphy. hile my invention has this-important commercial advantage, I do not wish to be limited to this use of the inventioinnor do I wish to be limited to other uses of my invention, for it is obvious that the; system and apparatus of my in-Ven.'

tion-Inay have other utilities for example, the 'signaling'devices may be em loyed at telegraph stations having no telepl i where the egraph operators have other Specification of Letters Patent. Application filed December 9, 1907. Serial No.40

with a telegra h station.

glounded circuit with said ones and Patented Sept. 29, 1908.

duties, the system of m invention enabling such operators to be ,c a ed by loud sounding signals when they are to attend to their telegraph instruments. "."Ih stem and apparatus of my invent 11 1 l a adaptable for other uses which have not been named.

I In Fig. l I have illustrated a conductor a unitinga number of telephone stations'a and have illustrated another conductor 1) unitinga number of telegra h stations ,12 1;, eaclrtelephone station eingcollocated The station b:

may, for examp e, be considered as a calling station, such as a train despatchers station, and While it isshown at the end of the conductor b, I do notwish to be limited to its association with this conductor for the pur poseof operatin the calling signals at the telephone and to egraph stations. The station I) is-shown as being e uipped with-the usual telegraphic outfit inc ll( ing a'sending key a, a line relay e, and asounding outfit e Each of the other stations-b is equipped with similar telegraphic apparatus. At'the calling'station I have il ustrated the telegraph battery f, each pole of which is connected with two terminals, the terminals 9 and 71. be-

ing normally in connection with contact arms 9 and h. The alternate contacts g and 7&2 are res ectively connected with the same oles of t e battery that are connected with t e normal contacts 9 and h, said alter nate contacts being adapted for engagement with the switch arms g} and wh n-said switch arms are'moved to the right, When the arms g and h are in their normal posi tions'; current from the batteryf isiimpressed upon the line b in one direction. When said arms 9 and 71- are in their alternate position, current from the battery 7 is impressed upon the lineb in the reverse'directione The bat tery in its normal circuit relation with the line is adapted .to beused as the-tele raphing battery, for it is'normalllvv included in own at the sending station b, a'magneti' for shifting the arms g and h from their normal to their alternate positions, said operating magnet 1' being included in a localgcircult )atter i and a calling lacy 11 I have with a I notindicate at the other substationsib the details of the telegraphic outfits the redo cated, it being understood that the line-re lays at these othersub'stations are miseries with, the telegraph linear 1d that they. are associated wi'thsoundingoutfits and telegraph with the telegraph line b and is shown in asso-:

ciation with a sounder circuit 0 as is well understood. The calling key 6 is also shown in Fig, 2 in series with the line, as is well un derstood. At the substation b -indicated in Fig. 2', I have also shown a polarized relay 7: in series with the line I) having an arm I laced at the ri ht when the sending key if is 111 its normal re eased position, in which position the switch arms 9 k at the calling station occupy their left-hand position. The

switch arm I is permanently connected with one terminal of a" battery m, while the contact Z of the switch arm I is connected with the other terminal of the battery m. When-- I ever the canin -key i at th'e'call'ing station is depressed, t e battery current impressedupon the line b is reversed and the arms lat a of the telegraph stations are movedto the left, whereby a circuit is closed ateach tele graph station which includes the arm I, the

contact Z, the winding of an operating electro-magnet n, the battery m, and a magnet 0. Each time the, arms I are moved tothe left, which occurs upon each depression of the calling key, t the magnet n is energized 'to move in a clockwise direction, a bell crank lever device p, pivoted at its elbow, which bell cranklever device has pivotally supported upon its upper arm an actuating pawl pf adapted to engage with the teeth upon the periphery of a switching quadrant or element p having a stationary pivotal point. Said quadrant is of metal and is connected with one pole of the batter m and carries a brush m of a size just su rcient to permit of the electrical connection of the quadrant p with a contact button 11 when said element p is brought into selected position.

The contact buttons p? at the different stations occupy varying positions with re; spect to the brush m, so that but one signalin circuit among all of the stations is established at a time. Each time the levers are operated, the actuatin pawls p cause the quadrants to rotate in c ockwise directions, a ste eachste accom an 'n' a de ression of ihe calling liey i iiolil in g pawl p are providedat the different stations to retain which they have been stepped.

steps that will bring the quad ant atfthe' selected station into circuit relati n with, the

signal button p tnereat, the calling key-i is 1 maintained in its actuated position, in order to maintain the magnet n energized and order to remove a weight g from engagementwith one end of'an interinediately pivoted lever g, whereby the other end of said lever is permitted to descend, owing to the 'pre ponderance of weight it possesses over the rst end of the lever, the weight g, when in engagementwith the leverq, normally over-e coming this preponderance of'weight. The right-hand and heavier end of the lever is, however, but slightly heavier than the. efthand end of said lever, so that when the weight g is removed from engagement with. the lever g, the heavier end of saidv lever descends but slowly. The object of having the right-hand end of-the lever q but slightly heavier than the left-hand end isto prevent the lever g from materially moving between the short intervals that occur between the depressions of the key '5 in selectin astation to be signaled. When, however,'t e station which is to be signaled has been selected, the key '5 is maintained in a depressed osition, whereupon the lever p lifts the weig ltq from the lever 'g ateach station, thereby permitting the heavier end of the lever g. at each station to descend. The lever q in descending, closes the contacts 1 that are included in circuit with a signal device 1", such as a bell,

at the selected station-onl this signalin circuit being traced from t e upper pole o the battery m through thecontacts r, the

the other stations beingin-open circuit), the

switching quadrant 12 to the lower pole of i I si nal device r, the contact button p at the; se ected station (the contact buttons. at

the weights g at all of the telegraph stations I 'from the levers-1g. thcr'eat, and effects the operation of the signaling device 1" at onl the selected station, inasmuchas the signa ing circuit is closed only at the selected station.- p a In order that the ap'aratus may be restored to normal, the ho ding pawl 1)" should .be withdrawn from. engagement with .the

teeth of the ratchet p to which end I-desirably connect the holding pawl p with the armature of an electro-rna net s.' The electro-magnet 's at each statlon is included in llt circuit with the contacts-r and with the bat-- tery"m when the contactsl'rat the various stationsare brought together. The magnets- 8 arethereupon energized to withdraw the holding paw s p preparatory'te permitting the retractile springss" at the various stations to restore the element pfyl-l wever,

when the agnets s are thus ene gf izedvby the closure 0 the contacts 1', the magnets n re to be engaged by-the upwardly moving end I of the bell crank lever I-do'not wish to be limited, however, to t 1e shape of the weight g, nor to the precise way in which it is permitted to engage the lever q and is caused to be disengaged from said lever.

in the embodiment ofthe invention herein shown, the telephone stations are indicated as being connected with a conductor a which is not in conductive connection with the conductor I), but I do not wish to be limited, of course, 'to a system in which the telephone circuits and the telegraph circuits are u )on distinct wires, nor, as hitherto stated, 0 I wish to be limited tothe use to which my improved selective slgnahng system-1s here put.

' It is obvious that changes may readily be made in the preferredembodiment of the inve1'1tionhercin illustrated, without departing from the spirit of the invention, and I do not, therefore, wish to be limited to the precise form of the invention illustrated, but,

Having thus described my invention, I claim as new and desire to soon e by Letters Patentthe followings 1.- A circuit selective appliance including clcctro magnetic ste by step operating mechanism, a' sluggish y moving circuit controlling clement including yan unbalanced lever, and a restraining element in the form of a weight normally imposed upon thelighter end of said lever to overcome the action of the heavier end of said lever, thercb normally preventingthe operation of said circuit controlling element and removable from influence thereupon by said electro-magnetic mechanism.

2. A circuit selective appliance including a step-by-step actuated switching mechanism, elcctro-n'iagnetic mechanism for operating the switching mechanism ste )-by-step, a sluggishly moving circuit controlling element including an unbalanced lever, and a restraining element in the form of a weight normally imposed upon the lighter end of said lever to overcome the action of the heavier end of said lever, thereby normallyprcventing the operatiim of said circuit controlling element and removable from influence theru )on'by' said e1ectro-magnet1c mechanism eac'i time said clectro-magnetic mechanism s operated to ste the switching mechanism. g

3, i circuit selective apphancemcludmg a stcp-by-stcp actuated switchin mechanism, electro-magnetic mechanism or operating the switching mechanism ste -by-step, a sluggishly inovm circuit contro l ng element including an unbalanced lever, and a restraining element in the form of a Weight normally imposed upon the lighter end of said lever to overcome the action of the heavier end of said lever, thereby permitted by .the

electro-magnetic me chamsm normally to 1prevent the operation of said circuit contro ling element and adapted to he removed from restraining infiuence upon said circuit controlling element by the operation of the electromagnetic mechanism.

4. A circuit selective appliance including electro magnetic step by step operating mechanism, a sluggishly moving circuit controlling elcment, a restraining element normally preventing the operation of said circuit controlling element and removable'from infiuence thereupon by said electro-magnetic mechanism, holding mechanism for 'maintaining theswitching mechanism in the position to which it is stepped, and elcctro magnetiemechanism for releasing the holding mechanism and having its circuit governed by the aforesaid circuit controlling element.

5. A circuit selective appliance includinga ste'p-by-step actuated switching mechanism, electro-magnetic' mechanism for operating the switching mechanism-.step-bystcp, a 'sluggishly mov ng circuit controlling element, a restraining element normally preventing the operation of said circuit controlling element and removable frominfluence thereupon by said electro-magnetic mechanism each timesaid electro-magnetie mechanism is o erated to'step the switching mechanism, ho ding mechanism for maintaining the switching mechanism in the position to which it is stepped, and electro-magnetic mechanism for releasing the, holding mechanism and having its circuit governed by the aforesaid circuit controllin element.

6. A circuit selective app iance including a step-by-step actuated swltchin mechanism,

electro-magnetic mechanism or operating the switching mechanism step-by-step, a sluggishly moving circuit controllin Y element, a restraining element permitted by the electro-magnetic mechanism normally to prevent the operationof said circuit controlling lementand adapted to be removed from restraining influence upon said circuit controlling element by the operation of the electromagnetiemechanism, holding mechanism for maintainmg the switching mechanism in the position .to WhlOll it is step ed, and electromagnetic mechanism for re easing the holding mechanism and; having. its circuit "goyerned by the aforesaid circuit controlling ele ment. I 7. A circuit selective appliance ncluding el'ectro magnetic strap by :steirthperztting mechanismy'a'slnggis moving mast conloo trolling element including an unbalanced lever, a restraining. element in the form of a weight normally imposed upon thelighter.

end of said lever to overcome the action of the heavier end of said lever, thereby norniallypreventing the operation of said-circuit controlling element and removable from influence thereuponby said electro-magnetic mechanism, holding mechanism for main taining the switching mechanism in the position to which it is stepped, and electromagnetic mechanism for releasing the hold' ing mechanism and having its circuit gov erned by the aforesaid circuit controlling element.

8. A circuit selective appliance including a step by-step actuated switching mechanism, electro-magnetic mechanism for operating the switching mechanism step by step, a sluggisl'ily moving circuit controlling element including, an unbalanced lever, a restraining element in the form of a weight normallyimposed upon the lighter 'end of said lever to overcome the action of the heavier end of said lever, thereby normally preventing the operation of saidcircuit controlling element and removable from influence thereu on by said elect-ro-magnetic mechanism eaci-time said electro-magnetic mechanism is o erated to step the switching mechanism, liolding mechanism. for maintaining the. switching. mechanism in the position-to which it is stopped, and electro-magnetic mechanism for releasing the holding mechanism and having its circuit governed bythe aforesaid circuit controlling element. 9. A circuit selective appliance including a stepbystep actuated switching mechanism, electro-magnetic mechanism for operating the switching mechanism stepby-step, a

sluggishly moving circuit'controlling element.

including an unbalanced lever, a restraining element in the form of a weight normally imposed upon the lighter end of said lever to overcome the action of the heavier end of said lever, thereby permitted bythe electromagnetic mechanism normally, to prevent.

the operation of said circuit controlling. element and adapted to be removed from re straining influence upon said circuit controlling elementby the operation of the elec tic-magnetic mechanism, holding mechan ism for maintaining the switching mechanism in the position to which it is stepped,and electro-magnctic mechanism for releasing the holding mechanism and having its circuit governed by the aforesaid circuit controlling element.

10. A circuit selective system including a transmission conductor, a. number of stations, each having aselectable circuit, elec- -tro-magneticstepbystep operating mechanism, a sluggish ly moving circuit controlling element, a rest raining element normally preventing the operation of said circuit controlling element and removable from influence thereupon by said electro-magnetic mechanism, a polarized relay at each of said stations a switch controlled thereb a-source of cur-- rent for operating said re eye, and a switch for including said relays in circuit with said source of current so as to operate said relays and governin theswitch actuating electromagnetic mec anism.

11. A circuit selective system including a transmission conductor, a number of statlons, each hav ng a selectable circuit, stepbyestep actuated switching mechanism, electro-magneti'cmechanism for operating the switching. mechanismstep-bfistepi. .a sluggishly moving circuit controlling element, a restralmng element normally preventing the operation of said circuit controlling clen'ient and. removable from influencethcreu on by said electroemagnetic mechanism eaci time switching mechanism step-by-step, a sluggishly moving circuit control ing element, a

restraining e ment permitted bv the electro-magnetic mechanism norma ly to revent theoperation of said circuit cont-re ing element and adapted to be'removed' from restraining influence upon said circuit con- 1 trollingelement by the operation of the electroq'nagn'etic mechanism, a polarized relay at each ,of said stations, a'switch controlled thereby, a source of ..current for operatin said relays, and a'switch for including said relays in circuit with said source of current so as to operate said relays and governing the switch actuating clectro-magnctic mech. anism. k

13. A circuit selective system including a transmission conductor, a number of stations,each having a selectable circuit, electro magnetic step-by-step operating mechanism, a sluggishly moving circuit eontrol ling element including an unbalanced lever, a restraining element in the form of a weightnormally imposed upon the lighter and of said lever to overcome the action of the.

heavier end of said lever, therebyn rmally preventing the operationjof said cir u1t controlling element and removable from influence thereupon [by said 'electro-mametic mechanism, a polarized relay at each of said stations, a switch conti'o led thereby, a

transmission conductor, a number of stations each havin a selectable circuit. ste I 21 relays in circuit with said source of c by-step actuated switching mechanism, electro-magnet-ic' mechanism for operating the switching mechanism step-by-ste a sluggishly moving circuit controlling e ementincluding an. unbalanced lever, a restraining element in the form of a weight normally imposed upon the lighter end of said lever to overcome the action of the heavier end of said lever, thereby normally preventing the operation of said circuit controlling element and removable from influence thereupon by said electro-magnetic mechanism each time said electro-magnetic mechanism is-operated to step the switching mechanism, a polarized relat at each of said stations, a switch contro led thereby, a source of current for operating'said relays, and a switch for includ ng said relays in circuit with said source of current so as to operate said relays and governing the switch actuating electromagnetic mechanism.

15. A circuit selective system including a transmission conductor, a number of stations, each having a selectable circuit, stepby-step actuated switching mechanism, electro-magnetic mechanism for operating the switching mechanism step-by-ste a sluggishly moving circuit controlling e ement including an unbalanced lever, a restraining element in the form of a weight normally imposed upon the lighter'elld of said lever to overcome the action of the heavier end of said lever, thereby permitted by the electromagnetic mechanism normally to revent the operation of said circuit control mg element and adapted to be removed from restraining influence upon said circuit controlc ling element by the operation of the electroma netic mechanism, a polarized relay at eaci of said stations, a switch-controlled thereby, a source of current for operating saidrelays, and a switch for including said rrent so as to operate said relays and governing the switch actuating electro-magnetic mechanism.

- 16. A circuit selective system including a transmission conductor, anumber of stations, each having a selectable circuit, electro-magne tic step-by-step operating mechanism, a sluggishly moving circuit controlling element, a restraining element normally preventing the operation of said circuit controlling .ele-' ment ,and removable from influence thereupon by saidclectro-magnetic mechanism,

holding mechanism fon maintaining the switching mechanism in the positionto which it is stopped, electro-magnetic mechanism for releasing the holding mechanism and having its circuit governed by the aforesaid circuit controlling element, a polarized relay at each of said stations, a switch controlled thereby, a source oicurrent for operating said relays, and a switch for including said relays in circuit with said source ofcurrent so as to operate said relays and governin the switch actuating electromagnetic mec lanism.

17. A circuit selective system including a transmission conductor,- a number of stations, each having a selectable circuit, stepby-step actuated switching mechanism, electro-magnetic mechanism for operating the switching mechanism stepby-step, a sluggishly moving circuit controlling element, a restraining element normally preventing the operation of said circuit controlling element and removable from influence thereupon by said electro-magnetic mechanism each time said electro-magnctio mechanism is operated to step the "switching mechanism, holding mechanism ior maintaining theswitching mechanism in the position 'to which it .is stepped, electro-magnetic mechanism for rcleasing the holding mechanism and having its a circuit governed by the aforesaid circuit'controlling element, a polarized relay at each of said stations, a switch controlled thereby, a source of current for operating said relays, and a switch for including said relays incircuit with said source of current so as to operate said relays and governin the switch actuating electro-magnetic mec anism.

18. A circuit selective system including a transmission conductor, a number of stations, each having a selecta -le circuit, stepby-step actuated switching mechanism, electro-magnetic mechanism'for operating the switching mechanism step by-step, a slug gishly moving circuit controllingelement, a restraining element permitted by the electromagnetic mechanism normally to revent the operation of said circuit controllmg element and adapted to be removed from restraining influence upon said circuit controlling element by the operation of theelectromagnetic mechanism, holding mechanism for-maintaining the switching mechanism in the position to which it IS stepped, electro- 'magnetic mechanism for releasing the holding mechanism and havin its circuit overned by the aforesaid circuit .controfimg element, a polarized relay at each of said stations, a switch controlled thereby, a source of current for operating said relays, and a switch for including said re ays in circuit .with said source of current so as to operatesaid relays and governing the switch actuating electro-magnetic mechanism.

19, A circuit selective system including a transmission conductor, a number of stations, each having a selectable circuit,.elcc

mechanism, holding mechanism for mainaforesaid circuit controlling element, a polar ized relay'at each of said stations, a switch 0 crating said relays,- and a switch for inswitching mechanism step-by-ste a slugv ismm the position to which it is' stepped,

by-step actuated switching mechanism, elec- -tion's, a switch controlledthereby, a source of -for including said relays in circuit with said' magnetic mec anism.

tro-magnetic step-by-step operating mechanl 1 transmission conductor, a number of staism, a slug ishly moving circuit controlling element inc uding an unbalanced lever, a'restraining element in the form of a weight normally imposed upon the lighter end of said lever to overcome the action of the heavier end of said lever, thereby normally preventing the operation of said circuit controlling element and removable. from infiuence thereupon by said electro-magnetic taining the switching mechanism in the position to which it is stepped, electro-magnetic mechanism for releasmg the holdin mechanism and having its circuit governed by the controlled thereby, a source of current for c uding saidirelays in circuit with said source of current'so as to operate said relays and governing the switch actuating electro-magnetic mechanism. I J k 20. A circuit selective system including a transmission conductor, a number of stations, each having a selectable circuit, steptro-magne tic .mechanismfor operating the gishly moving circuit controlling e ement including ian unbalanced lever, a restraining element in the form of a weight normally iniposed upon the lighter end of, said lever 'to, overcome the action of the heavier end of said lever, theiby normally preventing the opeia tion of said circuit controlling element and time said anism for maintaming the switching mechanelectro-magneticmechanism for releasing the holdin mechanism and having its circuit governed y theaforesaid circuit controlling element, a polarized relay at each of said stacurrent for operating said relays, and a switch source ofcurrent so as to .operate said relays and governin the switch actuatmg electroswitching mechanism step-bystep, e

21. A circuit selectiversystem including a tions, each having a selectable circuit, stepby-step actuated switching mechanism, elec tro-magnetic mechanism for operating the a sluggishly moving circuit controlling e ment including an unbalanced lever, a restraining element in the form' of 'a' weight normally imposed-upon the lighter end of'said lever to overcome the action of the heavier end of said lever, thereby permitted by the electro-- magnetic mechanism normally to revent the operation of said circuit controlling element and adapted to be removed from restraining influence uponsaid circuit controlling element by the operation of the elec tic-magnetic mechanism, holding mechanism for maintaining the switching mechanism in the position to which it is stepped, ele'ctro-magnetrc mechanism for releas ng at each of thereby, a

crate said relays and governin .the' switcl actuating electro magnetlc mec lanlsm 22. A- circuit selective; appliance including elee'tro-magnetic ste b step oper-ati ng i mechanism, a slugg'is y moving circuit con trolling element including an unbalanced.

the holding mechanism and having its 'cir cuit governed by the aforesaidi'circuit conand a switch for including said relays in cir-- I cuit with said source of cur1'ent.so as.to-op' lever, a restraining'element in'thel'form of-a] weight normally 1mposed uponthe lighter end of said lever to overcome the actionof the heavier end of said lever, therebyinorso" mally reventing-the operation. bf'sa di cirw cuit controlling element nd;-remt ahle from influence thereu on by said electre inagnetica holdin electr c-magneto mechanism, an included in a circuit estab ished by-the .eircuit controlling element and serving to hold said circuit controlling element-Boa sure the contact said element causesl In witness whereof," I heruntmsu-hScriBeof Dee. AID", 1907i .ARR-Y'OL HUGH, Witnesses:

E. C. HENNIp, J. E. Wnrrn.

my name this da 

